Adsorption mechanism of macroporous adsorption resin of plant tannin

This paper presents the analytical results of the study on adsorption kinetics and thermodynamic parameters on cation dye.Resultsshowed that the process agreed with the Langmuir Equation and second reaction dynamics. Meanwhile, diffusion of dye micro-particles played a very important role in the adsorption process. From the thermodynamic parameter analysis, it had been testified that the adsorption process precipitated a temperature reaction. High temperatures do not benefit adsorption. The adsorption process appears to be a type of spontaneous physical adsorption.